Fairfax, VA · Since 1975

HVAC, Heating & AC Repair in Fairfax, VA

From Old Town Fairfax to the wooded streets of Mantua — heating, cooling and plumbing tuned to the heart of Fairfax County.

★★★★★ 4.8 · 177 Google reviewsLicensed & Insured — VA #2701017843Carrier Factory AuthorizedFamily-owned, 50+ years
Your Fairfax Neighbor

Fairfax’s trusted heating & cooling company

R.A. Dobson has kept Fairfax homes comfortable for over 50 years — from the established streets of the City of Fairfax to the surrounding Fairfax County neighborhoods of Mantua, Kings Park West and Fair Oaks. Our licensed technicians handle heating, cooling and plumbing across the full range of homes that make Fairfax the center of Northern Virginia.

Fairfax housing runs the gamut: 1950s and 60s ramblers and colonials near Old Town, mid-century homes on wooded lots in Mantua, and newer construction out toward Fair Oaks and Fairfax Corner. Each comes with its own quirks — aging ductwork, oil-to-gas conversions, tight mechanical closets or modern high-efficiency systems that need correct setup.

Whether your AC quits during a summer heat wave or your furnace dies in January, R.A. Dobson responds quickly and quotes honestly. As a Carrier Factory Authorized Dealer, we install efficient, properly sized systems and stand behind our work.

🌱 Go Green with R.A. Dobson

Heat pumps and high-efficiency Carrier systems that cut energy bills — rebates and incentives included.

See the Go Green program →

Flexible financing

New system without the sticker shock — pre-qualify in minutes, no impact to credit.

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Neighborhoods & communities

Fairfax neighborhoods we serve

Old Town FairfaxMosby WoodsMantuaKings Park WestCountry Club HillsFair OaksFairfax VillaCobbdaleRutherfordFairfax Corner

From the independent City of Fairfax to the county neighborhoods around it, R.A. Dobson is your local heating, cooling and plumbing team. If you’re in the 22030, 22031 or 22033 ZIP codes, we’ve got you covered.

Local know-how

Common Fairfax HVAC & plumbing needs

Much of Fairfax’s housing dates to the 1950s through 70s, especially around Old Town, Mosby Woods and Country Club Hills. These homes frequently still have aging ductwork, undersized returns and systems converted from oil to gas over the years — all of which reward a technician who takes the time to diagnose properly rather than just swap a part.

In wooded neighborhoods like Mantua and Kings Park West, mature tree cover means outdoor condensers foul faster and need attentive maintenance, while newer homes toward Fair Oaks and Fairfax Corner run high-efficiency systems that perform best when they’re sized and commissioned correctly. R.A. Dobson services all of it, from a decades-old furnace to a modern variable-speed heat pump.

Good to know

Fairfax HVAC & plumbing FAQs

Do you offer same-day service in Fairfax?

Often, yes — we prioritize no-heat and no-cooling calls across Fairfax. Call (703) 481-3700 for the soonest availability.

Do you work on older Old Town Fairfax homes?

Yes. We handle the aging ductwork, oil-to-gas conversions and tight mechanical spaces common in Fairfax’s 1950s-70s homes, including ductless options where adding ducts isn’t practical.

Do you service both the City of Fairfax and Fairfax County?

Yes. We serve the independent City of Fairfax and the surrounding Fairfax County neighborhoods — Mantua, Kings Park West, Fair Oaks and more.

Can you help with high-efficiency upgrades in newer Fairfax homes?

Definitely. We install and fine-tune the variable-speed, high-efficiency Carrier systems common in Fair Oaks and newer Fairfax construction, and make sure they’re sized right.

Are you licensed and insured?

Yes — R.A. Dobson is fully licensed and insured in Virginia (VA #2701017843) and is a Carrier Factory Authorized Dealer.

Do you offer free estimates?

Yes — estimates on installations and replacements are free and no-obligation. Request your free quote or call (703) 481-3700.

Ready for fast, local service?

Serving Fairfax and all of Fairfax County for 50+ years. Get your free estimate today.

📞 Call Now: (703) 481-3700